Re: [PATCHv5 07/19] x86/mm: Mask out KeyID bits from page table entry pfn

[Dave Hansen]

On 07/17/2018 04:20 AM, Kirill A. Shutemov wrote:
> +     } else {
> +             /*
> +              * Reset __PHYSICAL_MASK.
> +              * Maybe needed if there's inconsistent configuation
> +              * between CPUs.
> +              */
> +             physical_mask = (1ULL << __PHYSICAL_MASK_SHIFT) - 1;
> +     }

This seems like an appropriate place for a WARN_ON().  Either that, or
axe this code.